The Arc'teryx Atom Jacket is a versatile insulated mid-layer designed for active outdoor use and everyday wear. Featuring advanced synthetic Coreloft insulation, it balances warmth, breathability, and mobility so you stay comfortable during aerobic pursuits or cool conditions. With a minimalist profile and durable construction, the Atom Jacket is ideal for hiking, climbing, travel, or as a reliable cold-weather layer under a shell. Atom Insulated Jacket Features Coreloft synthetic insulation for efficient warmth with excellent compressibility Breathable, stretchy fabric panels for enhanced mobility Soft and durable face fabric for everyday use Insulated, helmet-compatible hood for extra coverage Zippered hand pockets for secure storage Elastic cuffs and adjustable hem for a tailored fit Lightweight and packable design for easy layering TECH SPECS Weight: 335g Material of main body: Tyono™ 20 denier shell with FC0 DWR (Durable Water Repellancy) treatment - 100% nylon Insulation: Coreloft™ Compact 60 As per Arc'teryx's policy, to ensure that the majority of purchases made are for the end user we will be actively restricting purchases with suspected intent of on-selling or reselling goods